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Fig. 1
Trends near the zero for AtanK kernel with different σ values.
Fig. 2
The trends near and far from the zero for Gauss, ERBF, UKF and AtanK kernels with different σ values.
Fig. 3
Two-dimensional Checkerboard dataset and classification boundaries of 5 sets of kernels on Checkerboard dataset.
Fig. 4
Boundary between domains of positive and negative samples corresponding to Cosexp dataset and the classification boundaries of 5 sets of kernels on Cosexp dataset.
Fig. 5
Result of Friedman’s test of the testing accuracy.